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Pheonix sound and RX65
 Moderated by: Si.
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 Posted: Tue May 3rd, 2016 01:18 am
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Budd
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Has anybody had any experience with running Pheonix Sound and Deltang RX65 together in large scale, I have posted the same question down on the R/C control thread.

Wayne from Oz



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Modelling the 3'6" gauge railways of South Australia of course.
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 Posted: Tue Nov 1st, 2016 05:47 pm
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Toeffelholm
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Hi,

I am recently working on adding a Phoenix Sound to my first 7/8 loco with Rx65. (petrol loco with Phoenix speeder sound)

I've activated the speed dependent engine sound so far and it's quite good. I had to change a setting in the configuration to make it work with the motor voltage, so I strongly recommend to take the computer interface as well.

The interface is also very useful to switch off the preset tooting and chiming of horn and bell, automatically activated when starting, stopping and with a certain speed. And, I couldn't believe, but there's also an automatic cow moo playing.

It's nice to have the possibility to make some horn and bell sound when I want it, but this permanent automatic activation drives me crazy. So next step will be activating horn and bell by a transmitter button.

So far I have figured out you need at least 9V to make the sound board work. A least a two cell lipo pack wasn't enough to get it work. Three cells work fine.

Engine sound starts to play when motor voltage is 0,5V minimum. That's a bit impractical when you have a coreless motor, that already starts to move before 0,5V are reached. One possibility to solve this is to set the shut-off delay to zero.
Then the engine sound starts and plays the idling sound as soon as battery power is switched on.

Juergen



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modelling in 1:22.5 on 32mm and 16.5mm track
Actual project: 7/8" scale on 45 mm track
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 Posted: Wed Nov 2nd, 2016 03:15 pm
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Si.
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Hi Juergen.

If you put a pair of silicon-diodes, wired in parallel, each in different direction; in series with your motor.
The motor will start, only when the voltage is greater than the 'forward Voltage drop', of the diode/s.

An 'inefficient' Schottky-diode could be about right, at around 0.5 Volts 'forward-drop'.

Normal 1N400x types, are probably going to be too higher drop, about 0.8 Volts ish.
A 'efficient' Schottky, probably too low, about 0.3 Volts ish.

If you can measure the first movement Voltage, with a meter.
Electronics catalogues normally quote the forward Voltage drop of the various diodes they sell.

Of course, the start Voltage may depend a bit on the number of cars pulled & if on a grade.

:moose:

Si.



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

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http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Thu Nov 3rd, 2016 11:31 am
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Toeffelholm
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Hi Si,

very good idea.
Thank you very much.

Juergen



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modelling in 1:22.5 on 32mm and 16.5mm track
Actual project: 7/8" scale on 45 mm track
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 Posted: Thu Nov 3rd, 2016 03:00 pm
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Herb Kephart
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Hi Jurgen

Missed you and Theodore.
Welcome back!!

Herb 



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 Posted: Thu Nov 3rd, 2016 03:30 pm
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Si.
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.

Attachment: theodore.jpg (Downloaded 49 times)



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Thu Nov 3rd, 2016 04:17 pm
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Toeffelholm
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Thank you Herb and Si,

Theodor will be surely part of my new 7/8" adventure as well.


Juergen



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modelling in 1:22.5 on 32mm and 16.5mm track
Actual project: 7/8" scale on 45 mm track
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 Posted: Fri Nov 4th, 2016 02:15 pm
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Helmut
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May I shed some water in your wine?
 @Si, your proposal is perfect when one is using the standard 'analogue' voltage control, where the amplitude is increased to start a motor. Alas, those b....y newfangled RX65 and similar use PWM, where the amplitude is constant and the effective voltage across the motor's armature is determined by the duty cycle. So to speak, you have to drop the diodes as they are to no avail here.



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Regards, H.
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 Posted: Fri Nov 4th, 2016 02:21 pm
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Si.
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:f: :f: :f: :f: :f:



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' Mysterious Moose Mountain ' - 1:35n2 - pt.II
http://www.freerails.com/view_topic.php?id=7318&forum_id=17&page=1

' M:R:W Motor Speedway !!! ' - 1:32 Slotcar Racing Layout
http://www.slotforum.com/forums/index.php?showtopic=59295&st=0&a
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 Posted: Wed Nov 16th, 2016 12:15 pm
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Toeffelholm
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I found some time to proceed with the Phoenix Sound, and activation of bell and horn works perfectly with DelTang Rx (as was expected).

In the basic configuration of the Phoenix sound-board (P8 in my case) the trigger inputs carry a voltage of about 3,3V and are activated if connected to ground (battery - ), so that the potential at the trigger input drops down to 0V.

In my transmitter configuration I will use channel 3 to activate momentary sounds like bell and horn.
With Rx65(-22 in my case) P-outputs 9 and 10 are already assigned to follow channel 3, providing 0V on output 9 when ch3 is "high" and 0V on output 10 when ch3 is "low". If not activated the outputs are at 3,5V. (Basically this can be programmed at each Rx, if not pre-configured.)

So I will use a a 3 way switch with self-centering middle position for that task, as provided e.g. in transmitter kit for Tx20 and 22. For Tx self-building see the appropriate circuit drawing of e.g. Tx20 for ch3.

For my 7/8th scale project I will reactivate my first self-built transmitter, that never left it's cardboard-case status up to now.
http://www.freerails.com/view_topic.php?id=3583&forum_id=45&highlight=steampunk+transmitter


Juergen

Last edited on Wed Nov 16th, 2016 02:16 pm by Toeffelholm



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modelling in 1:22.5 on 32mm and 16.5mm track
Actual project: 7/8" scale on 45 mm track
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